Endodontics · single question
What is the ACCESS CAVITY SHAPE for the mandibular lateral incisor that is DIFFERENT from the others listed (maxillary premolars, maxillary canine)?
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Correct answer: E. Mandibular lateral incisor has a unique ovoid/lozenge shape different from the oval maxillary teeth
✓ E) Mandibular lateral incisor has a different access cavity shape.
Access cavity shapes: Maxillary central incisor = triangular; Maxillary lateral/canine = oval; Maxillary first premolar = ovoid/elongated; Mandibular incisors = OVAL to lozenge shape. The mandibular lateral incisor has a narrower, more elongated oval/lozenge access. Mandibular incisors frequently have TWO canals (look for labial and lingual canals). This anatomical variation makes mandibular incisor endodontics tricky. Always check for second canal. The PDF notes mandibular lateral is the exception among the listed options.
Access cavity shapes: Maxillary central incisor = triangular; Maxillary lateral/canine = oval; Maxillary first premolar = ovoid/elongated; Mandibular incisors = OVAL to lozenge shape. The mandibular lateral incisor has a narrower, more elongated oval/lozenge access. Mandibular incisors frequently have TWO canals (look for labial and lingual canals). This anatomical variation makes mandibular incisor endodontics tricky. Always check for second canal. The PDF notes mandibular lateral is the exception among the listed options.